Free Oracle 1Z0-804 Exam Dumps Questions & Answers

How many Threads are created when passing task to an Executor instance?

• A.A single Thread Is used to execute all tasks.
• B.A number of Threads equal to the number of CPUs Is used to execute tasks.
• C.The method used to obtain the Executor determines how many Threads are used to execute tasks.
• D.A new Thread is used for each task.
• E.A number of Threads determined by system load is used to execute tasks.
• F.A developer-defined number of Threads is used to execute tasks.

Given:

Which two are true?

• A.No output is produced
• B.No new threads of execution are started within the main method
• C.Two new threads of exclusion are started within the main method
• D.Runnable is printed
• E.One new thread of execution is started within the main method
• F.Thread is printed

Which three statements are correct about thread's sleep method?

• A.The sloop (long) method parameter defines a delay in microseconds.
• B.A thread loses all object monitors (lock flags) when calling the sleep method.
• C.A thread can continue execution before the amount of time defined in the sleep (long) parameter.
• D.A thread is guaranteed to continue execution after the exact amount of time defined in the sleep (long) parameter.
• E.Only runtime exceptions are thrown by the sleep method.
• F.The sleep (long) method parameter defines a delay in milliseconds.
• G.A thread can continue execution after the amount of time defined in the sleep (long) parameter

Given:

What is the result?

• A.Compilation fails.
• B.class java.lang.arrayIndexOutOfBoundException
• C.78 class java.lang.Array.IndexOutOfBoundException
• D.class MarkOutOfBoundException

Given:

What is the result?

• A.Three
• B.Compilation fails.
• C.One
• D.The program runs, but prints no output.